40.Statistical problems for homogeneous and isotropic random fields observed on a sphere, Second International Symposium on Information Theory. Held at Tsakhkadzor, Armenia, September 2-8, 1971 (N. Petrov and F. Csáki, eds.), A complementary volume to Problems of Control and Information Theory/Problemy Upravleniya i Teorii Informatsii, Akadémiai Kiadó, Budapest, 1973, pp. 355-363. (Russian)

Statistical problems for homogeneous and isotropic random fields observed on a sphere, Second International Symposium on Information Theory. Held at Tsakhkadzor, Armenia, September 2-8, 1971 (N. Petrov and F. Csáki, eds.), A complementary volume to Problems of Control and Information Theory/Problemy Upravleniya i Teorii Informatsii, Akadémiai Kiadó, Budapest, 1973, pp. 355-363. (Russian)